| 摘要 |
Change in the amount of an absorbing liquid is detected to restore the original amount, and carbon dioxide is stably recovered from exhaust gas. The recovery apparatus of carbon dioxide has: an absorption column where a gas contacts with an absorbing liquid that absorbs the carbon dioxide contained the gas; and a regeneration column where the absorbing liquid after absorption is heated to release carbon dioxide and the absorbing liquid is regenerated. Water vapor contained in the carbon dioxide-containing recovery gas, discharged from the regeneration column, is condensed by a recovery device, and the condensed water is supplied at a fixed flow rate to the regeneration column. A liquid level meter detects the liquid level that changes in accordance with fluctuations in the amount of the absorbing liquid. If the liquid level is lowered, a restoration system restores the original liquid level, using the condensed water. The condensed water in an amount sufficient to restore the liquid level is supplied to the absorbing liquid near the liquid level meter. |
